Ok, you bought the tractor with a FEL and you want to figure out what is the true cost of ownership. Lets take a small tractor like the John Deere 3025D and figure the total ownership costs for it, which was sold new for around $18k before the pandemic but now has gone up to $25k. You have to calculate the fixed costs such as depreciation, taxes, insurance, and tractor housing, so lets do a 10 year look, with tractor use of around 100 hours per year (since its a small tractor). So you determine the residual value or the salvage value you expect to receive by selling the equipment at the end of the equipment's useful life. For this example, we will assume that the residual value of the equipment is $10,000. Subtract the residual value $10,000 from the original cost $25,000 and you get 15,000, and divide that by 10 years and it depreciates $1500 a year. Now just add in your insurance, taxes and housing plus fuel and maintenance and you get your true cost of ownership. Is that about right?